﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

/// <summary>
/// 主题Base接口(发布者)
/// </summary>
namespace RewriteWeatherApp.Base
{
    public interface IAccountsSubject
    {
        void RegisterObserver(IObserver observer);//关注
        void RemoveObserver(IObserver observer);//取关
        void NotifyObserver();//通知
    }
}
